Sunday, 17 January 2016

#10 Average Quantitative Aptitude Question

Find the sum of first 30 natural numbers

A. 470
B. 468
C. 465
D. 463

 Answer And Explanation

Answer: Option C

Explanation:

Sum of n natural numbers

=n(n+1)2=n(n+1)2

=30(30+1)2=30(31)2=465=30(30+1)2=30(31)2=465

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